The configuration of PCI Pass-Through is twofold. First, the hypervisor must be in-
formed at boot time that a PCI device should be available for reassigning. Second, the
PCI device must be assigned to the VM Guest.
2.5.1 Configuring the Hypervisor for PCI
Pass-Through
1
Select a device to reassign to a VM Guest. To do this run
lspci
and read the
device number. For example, if
lspci
contains the following line:
06:01.0 Ethernet controller: Digital Equipment Corporation DECchip
21142/43 (rev 41)
In this case, the PCI number is
(06:01.0)
.
2
Run yast > System > Boot Loader.
3
Select the
Xen
section and press Edit.
4
Add the PCI number to the Optional Kernel Command Line Parameter line:
pciback.hide=(06:01.0)
5
When preparing for fully virtualized guests, add the parameter
iommu=1
to
Additional Xen Hypervisor Parameters.
6
Press Ok and finish YaST.
7
Reboot the system.
8
Check if the device is in the list of assignable devices with the command
xm pci-list-assignable-devices
2.5.2 Assigning PCI Devices to VM Guest
Systems
There are several possibilities to dedicate a PCI device to a VM Guest:
14
Virtualization with Xen
